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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>小鸟启蒙(facesoho.com)</title> </head> <style> #myProgress { width:100%; height:30px; position:relative; background-color:#ddd; } #myBar { background-color:#4CAF50; width:10px; height:30px; position:absolute; } </style> <body> <h1>JavaScript 进度条</h1> <div id="myProgress"> <div id="myBar"></div> </div> <br> <button onclick="move()">点我</button> <script> function move() { var elem = document.getElementById("myBar"); var width = 0; var id = setInterval(frame, 10); function frame() { if (width == 100) { clearInterval(id); } else { width++; elem.style.width = width + '%'; } } } </script> </body> </html>
运行结果